And although the Portuguese was forced off with a leg problem towards the end of their quarter-final first leg victory, manager Carlo Ancelotti stressed it was just a niggle.

CHAMPIONS LEAGUE TOP SCORERS SEASON-BY-SEASON

2013-14: Cristiano Ronaldo (Real Madrid) - 14 goals

2011-12: Lionel Messi (Barcelona) - 14 goals

2013-14: Cristiano Ronaldo (Real Madrid) - 13 goals

2012-13: Cristiano Ronaldo (Real Madrid) - 12 goals

2010-11: Lionel Messi (Barcelona) - 12 goals

2002-03: Ruud van Nistelrooy (Manchester United) -12 goals

Ronaldo received treatment on the pitch for what looked like a problem with his left knee, but Ancelotti said: "He was bothered a bit by his knee, we needed to defend and to avoid any risks, we've substituted him. It's not a problem. He isn't injured."

Viva Ronaldo: The Portuguese could surpass Messi's 14-goal haul

Ancelotti added he would not take any chances with the Portugal international.

"We'll see how it goes. At this moment we're not concerned by the niggle. If it continues, naturally we'll rest him but we're not thinking about that because the player is calm.